# Service bulletin PIP5427B

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10156913
- Published by NHTSA: 2019\-04\-08
- Manufacturer's number: PIP5427B
- Manufacturer's date: 2019\-03\-06
- NHTSA component: FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES; ENGINE

## NHTSA's summary

This Preliminary Information communication provides information to the technician about vehicle that may have a Service Engine Soon Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Codes P2635, U0074 and or U18A2. Technician will need to follow published diagnostics for Diagnostic Trouble Codes U0074 would take priority over U18A2 if both set before addressing DTC P2635.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10156913-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10156913-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine, Fuel system, Fuel tank

## Trouble codes named

P2635, U0074, U18A2

## Vehicles listed

- 2015 to 2018 CADILLAC ESCALADE
- 2017 CHEVROLET SILVERADO
- 2014 CHEVROLET SILVERADO 1500
- 2015 to 2016 CHEVROLET SILVERADO 2500
- 2018 CHEVROLET SILVERADO 2500
- 2015 to 2018 CHEVROLET SUBURBAN
- 2015 to 2018 CHEVROLET TAHOE
- 2017 GMC SIERRA
- 2014 to 2016 GMC SIERRA 1500
- 2018 GMC SIERRA 3500
- 2015 to 2018 GMC YUKON
- 2015 to 2018 GMC YUKON XL

## Recalls for the same vehicles and component

- [23V047000](/recalls/nhtsa/23V047000.md), 2023-02-02: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY
- [19V088000](/recalls/nhtsa/19V088000.md), 2019-02-07: FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY

## Other bulletins for the same vehicles and component

- [17\-NA\-302](/bulletins/10252106.md), 2024-03-28, Service bulletin: EQUIPMENT; FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY. This informational bulletin provides information on availability for a locking gas cap for trucks are operated in high amount of dirt or dust which can migrate to the filler cap area.
- [14743B](/bulletins/10247235.md), 2023-12-18, Service bulletin: POWER TRAIN; FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY; STEERING; STEERING:ELECTRIC POWER ASSIST SYSTEM. Loss of Electric Power Steering \(EPS\) Assist
- [29400\-01](/bulletins/10191129.md), 2021-04-30, Service bulletin: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY. Condition On certain 2013\-2015 model year Chevrolet Express, Chevrolet Silverado HD, GMC Savana, GMC Sierra HD, and 2014\-2015 model year Chevrolet Cruze vehicles that are equipped with a diesel engine \(RPO LML/LGH/LUZ\), a malfunction\-indicator light \(MIL\) may illuminate due to an offset in the temperature sensor in the diesel\-emission\-reduction fluid \(DEF\) tank reservoir or increased DEF tank\-heater resistance. Special Coverage Adjustment This special coverage covers the condition described above for a period of 10 years or 120,000 miles \(193,000 km\), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after November 17, 2016, are covered by this special coverage and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to November 17, 2016, must be submitted to the Service Contract provider. Correction Dealers are to replace the DEF tank reservoir. The repairs will be made at no charge to the customer
- [19NA277](/bulletins/10171899.md), 2020-03-02, Service bulletin: FUEL SYSTEM, GASOLINE; FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY. This technical bulletin provides a procedure to replace the fuel tank, sending unit and install a piece of fuel hose to the vent and route down the fuel feed line and secure with zip ties.
- [18157](/bulletins/10143734.md), 2018-08-20, Service bulletin: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY; FUEL SYSTEM, DIESEL. 18157 \- Customer Satisfaction Program. Certain Low Cab Forward vehicles, equipped with diesel engines, may have a condition in which the Fuel Tank Sub Unit float arm in the rear\-mounted fuel tank may become disconnected causing the fuel gauge to display ?Empty? \(E\) regardless of the actual fuel level. Dealers are to replace the Fuel Tank Sender Unit.
- [17067](/bulletins/10143408.md), 2018-08-06, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:DIESEL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; ELECTRICAL SYSTEM:SOFTWARE; FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY; FUEL SYSTEM, DIESEL. 17067 \- Product Emissions Recall. General Motors has decided to conduct a Voluntary Emission Recall on certain vehicles equipped with a 6.6L diesel \(LML\) engine and dual fuel tanks \(N2N\). Under certain driving conditions, fuel may not be transferred from the rear fuel tank to the front fuel tank at a sufficient rate. If this occurs, the diagnostic trouble code \(DTC\) P2636 will set, the malfunction indicator lamp will illuminate, the fuel gauge will display empty, and the transfer pump will be disabled until serviced. If the vehicle continues to be driven, it will run out of fuel in the front tank and stall. Dealers are to replace fuel line connections to allow the rear tank, in addition to the front tank, to directly supply fuel to the engine. The engine control module \(ECM\) will also be reprogrammed with calibrations necessary to support this new connection.
- [17NA402](/bulletins/10139241.md), 2018-06-04, Service bulletin: ELECTRICAL SYSTEM:STARTER ASSEMBLY:RELAY; FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES; FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP. This technical bulletin provides a procedure to replace relays that may be sticking in cold regions.
- [PIP5427A](/bulletins/10137723.md), 2018-05-21, Service bulletin: FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES. This Preliminary Information communication provides information to the technician about vehicle that may have a Service Engine Soon Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Codes P2635, U0074 and or U18A2. Technician will need to follow published diagnostics for Diagnostic Trouble Codes U0074 would take priority over U18A2 if both set before addressing DTC P2635.
- [17NA302](/bulletins/10137270.md), 2018-05-21, Service bulletin: EQUIPMENT; FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP; FUEL SYSTEM, GASOLINE. This informational bulletin provides information on availability for a locking gas cap for trucks are operated in high amount of dirt or dust which can migrate to the filler cap area.
- [PIT5481C](/bulletins/10129082.md), 2018-02-21, Service bulletin: AIR BAGS; POWER TRAIN; ELECTRONIC STABILITY CONTROL:AUTOMATIC \(ASC\); FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY; STEERING; LANE DEPARTURE. This Preliminary Information communication provides information to the technician with additional information on the functionality of Lane Keep Assist.Starting with2016 model year Lane Keep Assist Regular Production Option Code \(UHX\) replaced Lane Departure Warning Regular Production Option Code \(UFL\). Lane Keep Assist is designed to assist the driver in keeping the vehicle from drifting out of a driving lane that has clearly identified markings. The electric power steering provides a gentle steering correction if a lane marking has been crossed and the driver has not actively responded.

JSON: [/v1/bulletins/10156913](/v1/bulletins/10156913)

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